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(No Model.) 2 Sheets-Sheet 1.

G. H. NORTON. RIVETING' MACHINE.

No 507,239. Patented- Oot. 24, 1 893.

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G. H. NORTON. RIVETING: MACHINE.

Patented Oct. 24, 1893.

IWVENTO? UNITED STATES PATENT Ornrcn.

CHARLES H. NORTON, OF DETROIT, MICHIGAN, ASSIGNOR TO THE LELAND,FAULOONER & NORTON COMPANY, OF SAME PLACE.

MACHINE.

SPECIFICATION forming part of Letters Patent No. 507,239, dated October24, 1893.

Application filed June 20, 1892.

To all whom it mat concern.-

Be it known that I, OHARLnsH. NoRToN,a citizen of the United States,residing at Detroit, county of Wayne, State of Michigan, have inventedacertain new and useful Improvement in Power Riveting-Machines; and Ideclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

This invention relates to riveting machines, and has for its object animprovement in that form of riveting machine, in which a succession ofshort, light blows are given very rapidly to the rivet upon which a headis to be formed.

The machine in which this invention is embodied is especially designedfor work upon light material where small parts are to be securedtogether by light rivets; as specimens of the character of work to bedone I would mention, the riveting together of locks, padlocks, thehandles of cutlery, &c., and in doing the work, I sometimes give to thehammer a speed of from forty to sixty blows per second. Where such highspeed is required, and where exact accuracy of the place of the strokeof the hammer is required, some delicate adjustments are necessary, andto make such accurate adjustments I employ, first, an adjustment of thehammer helve, in the eye on the rockshaft; second, an adjustment of thehammer head along the helve. These two adjustments enable me to bringthe stroke properly over the anvil as the adjustments may be made withrespect to the thickness of the special article to be treated. Thereisalso an adjustment of the anvil, to enable the machine to beaccommodated to the work to be done; there is also an adjustment of theframe which holds the wiper-block which regu- "lates the length of thestroke given.

Another object of the invention, is found in the regulation of the forceof the blow through the medium of the foot treadle; the force of theblower is greater if heavier pressure is put on the foot treadle, andlighter if less pressure is put on the foot treadle.

In the'special form of riveting hammer Serial No. 437,363. (No model.)

employed by me, the blow is produced by the retractile force of aspring, that is rapidly distended by means of a cam-wheel or wiper-Wheel.

In the drawings, Figure 1, shows in perspective the hammer, and itssupports and the treadle used to operate it. Fig. 2, shows in elevationthe hammer and anvil and the parts immediately connected to the hammerhelve.

A, represents a supporting table, and B, represents the bed plate. 1),represents a standard upon which is journaled a rock arm R; the upperend R, of the rock-arm R,'is made in two parts '1", r, to form anadjustable eye to receive the helve of the hammer; the part 4", is acontinuation of the main or body part of the rock-arm R, and the part1', is a face plate that presses upon the side of the hammer helve, andholds it in the eye or socket R The helve is made slightly thicker thanthe width of the socket R and the face plate 7', can be drawn downtightly against the helve in case the helve shrinks or wears away.

Attached to the rock arm R, is a lever L, to the end-of which isconnected a spring Z, reaching to and connected with some fixed point onthe bed of the frame-work, as with the lug Z; the relative position ofthe lever L, with respect to the eye part R, is immaterial, the onlyrequirement being that the spring L, shall be arranged to be put in astate of ten sion, when the hammer head is brought down in making astroke; the object of the spring 1, is to lift the wiper block W,entirely 01f the wheel w, when not in use.

The hammer head H, is formed with an ad.

justable eye, made in the same manner as that already described, for theeye through which the tail end of the helve passes. The face of the headof the hammer is formed of a detachable point W, the face being finishedin any desired shape. Directly under the face of the hammer head is anadjustable anvil 0, formed of a rod of metal movable Vertically throughthe bed B, and moved vertically by means of an adjusting screw O; asetting screw 0, holds the anvil O, in place after it has been adjusted.The vertical adjustment of the anvil permits the use of the rivetinghammer with articles of different thickness; it also permits theoperator to regulate the force of the blow which strikes the end of therivet because the hammer head is prevented from reaching below a certainfixed point, determined by the relative positions of the hammer head,the wheel to, and the wiper WV. Of these the wheel, w, remains fixed inposition while both the head H, and the wiper W, are adjustable withrespect to the wheel to, according to the requirements of the work to beperformed.

w indicates a wiper wheel j ournaled in supports that spring from thebed B, adapted to rotate and receiving its rotative motion from anyconvenient source of power; its periphery is cut into a number of wipercams that engage with the wiper block W. The wiper block W,is held inaframe that is adjustable along the helve h, the frame consisting of themain holding piece F, provided with two sockets F, F and a face platef,held to the holding piece F, by suitable bolts and forming two eyestraversed by the helve 7t, and the wiper block W.

The holder F, is adjustable along the helve h, and the wiper block W, isadjustable through the holder.

J, indicates a Y-guide springing from the bed of the riveting machine,and engaging with the helve of the hammer near the head, and operatingto prevent lateral motion of the hammer head. As shown in the drawingsthis guide forms an extension from the journal supports of the wheel w,but it may be connected to the bed independently if desired.

From the frame which holds the wiper W, a treadle rod made in two partsD, D, with an interposed spring D extends to a treadle d, hinged to somepoint which is fixed with respect to the bed piece B.

To operate the hammer, the wiper wheel w, is put in motion and kept incontinous motion; the article to be riveted is placed with the rivet tobe treated on the anvil O. Tension is put upon the spring D by pressingdown upon the treadle d, with the foot. This tension operates to pullthe wiper block W, down against the cam wheel w, and as the wheel to,revolves the hammer rapidly rises and falls, the entire force of thestroke being due to the retractile force of the spring D the cam-wheeloperating to lift the hammer increases the tension of the spring D andpermits the spring to pull the hammer down as the wiper block W, dropsover the ends of the cams of the wiper Wheel.

Having thus described my invention, what I claim as novel, and desire tohave secured to me by Letters Patent, is-

1. In a riveting machine, the combination of a helve, a hammerhead adjustable thereon, a wiper block adjustable along said helve, a cam wheeladapted to engage with said wiperblock, a treadle, and a springconnection between said treadle and said helve, adapted to hold theWiper-block in engagement with the cam wheel substantially as and forthe purpose specified.

2. In a riveting machine, the combination of a helve hinged to abed-plate, a cam wheel, a hammer head adjustable along said helve awiper block secured to said helve, a treadle, and a spring connectionbetween the treadle and the wiper block whereby the hammer is lifted bythe cam-wheel and the stroke is effected through the retractile force ofthe spring, substantially as and for the purpose specified.

3. In a riveting machine the combination of a hammer, a cam and wiperadapted to lift the hammer, a treadle a spring connection between thetreadle and wiper, and means for lifting the wiper out of engagementwith the cam, substantially as and for the purpose specified.

4:. In a riveting machine the combination of ahammerand the helvethercof,a treadle, a spring connection between said treadle and saidhammer helve, a spring retractor and a guide adapted to direct thehammer end of said helve, substantially as and for the purposespecified.

In testimony whereof I sign this specification in the presence of twowitnesses.

CHARLES H. NORTON.

'Witnesses:

EFFIE I. CROFT, CHARLES F. BURTON.

